close #1509 Fixed: Items are not shown in Edit Invoice page

resources/assets/js/views/sales/invoices.js

@@ -46,6 +46,7 @@ const app = new Vue({
             edit: {
                 status: false,
                 currency: false,
+                items: false,
             },
         }
     },
@@ -93,6 +94,10 @@ const app = new Vue({
 
     methods: {
         onChangeContact(contact_id) {
+            if (!contact_id) {
+                return;
+            }
+
             if (this.edit.status && !this.edit.currency) {
                 this.edit.currency = true;
 
@@ -286,6 +291,12 @@ const app = new Vue({
         },
 
         onSelectItem(item, index) {
+            if (this.edit.status && !this.edit.items) {
+                this.edit.items = true;
+
+                return;
+            }
+
             let tax_id = (item.tax_id) ? [item.tax_id.toString()] : '';
 
             this.form.items[index].item_id = item.id;